DESIGN AND ANALYSYS OF ATTACHMENT FOR ALUMINUM FOAM SANDWICH IN BLAST-PROOF STRUCTURES

• Main Author: Akbar, Ilham
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/36543
• Institution: Institut Teknologi Bandung

Increasing the safety of combat vehicles or Armored Carrier (APC) is an important aspect of the threat of grenades or land mines. Vehicle resilience has implications for the level of safety that occurs. Repairing, Happening, Grenades or Landmines, Destroying the Bottom of the Vehicle. Then, the V shape aluminum foam sandwich was developed as a protective structure for combat vehicle floors that is capable of managing explosive energy effectively. However, it is necessary to discuss critical components which are the determinants of the effectiveness of protective structures, namely the connection structure. Therefore, this study discusses and analyzes the structural response that occurs in loading according to STANAG 4659 level 3. Simulation is done numerically with the Load Blast Enhanced (LBE) method in applications that are free LS-DYNA. Three design concepts were obtained that were completed and carried out trade-offs, so that the most optimal design was obtained. The comparison parameter is the cross sectional force of the joint. The connection used consists of bolts with a diameter of 20mm (M20) and a total of 14 pieces. Sandwich made of aluminum. Comparison of the response of the protective structure and the floor of the vehicle is a benchmark for obtaining an optimal design. Loading is defined as an explosion of 8 kg of TNT which is under the floor of a vehicle. From the results of simulations and analysis, a connection design that has a configuration of pull bolt, c-beam, nut and spring washer is obtained. The connection is installed at the bottom of the vehicle floor. And the selected aluminum foam sandwich structure has a configuration, namely aluminum foam that attaches to the floor and additional plates at the bottom.